. >> does it show how useful drones wrecks are for the u.s. and why the president will not give them up? >> i think at shows if coordinated and targeted and calibrated at the right pace, they are useful, but they are not a sustainable tool for the long-term. >> thank you so much for joining us. back in the u.s., a security officer has been killed by a los angelese the international airport, one of the world's busiest hubs. several others were wounded and travel plans of several thousands across the globe are in chaos tonight. the gun man, armed with a semiautomatic rifle, opened fire inside the terminal. he was shot by the police before being taken into custody. johnny diamond has this report. sunny of nowhere on a morning at los angeles airport, gunshots. police, fire, and amulets vehicle swarmed the terminal buildings. one of the injured was taken to safety and treatment. airport, the police perched, weapons drawn, searching for gunmen. it was inside the airport's third terminal that a man pulled out a semi automatic rifle and started firing